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SMTnet Express, July 12, 2018, Subscribers: 31,180, Companies: 10,985, Users: 24,934

Technical Library

Improving Thermal Cycle and Mechanical Drop Impact Resistance of a Lead-free Tin-Silver-Bismuth-Indium Solder Alloy with Minor Doping of Copper Additive

T. Wada, S. Tsuchiya, S. Joshi, R. Garcia, K. Mori, T. Shirai; Koki Company LTD

For a demanding automotive electronics assembly, a highly thermal fatigue resistant solder alloy is required, which makes the lead-free Sn-Ag-Cu type solder alloy unusable. Sn-Ag-Bi-In solder alloy is considered as a high reliability solder alloy due to significant improvement in thermal fatigue resistance as compared to a standard Sn-Ag-Cu alloy. The alloy has not only good thermal fatigue properties but it also has superior ductility and tensile strength by appropriate addition of In; however, initial results indicated a sub-par performance in joint reliability when it is soldered on a PCB with ENIG surface finish.

Forum search results for related keywords: thermal fatigue, ENIG.

SMT / PCB Products

PCB ASSEMBLY

Printing

Speedprint

Solder Paste Stencils

BEST, Inc.

Dispensing

Techcon

Prototyping

SlingShot Assembly

Dispensing

GPD Global

Pick & Place

Europlacer

Reflow

Heller

Hand Assembly

Virtual Industries

PCB CLEANING

PCB STORAGE

Cleaning

ZESTRON

Cleaning Agents

Kyzen

Board Handling - Storage

Seika Machinery

PCB INSPECTION

Inspection

Saki

Inspection

Creative Electron

Inspection

YXLON

PCB REWORK

Rework

Precision PCB Services

Rework

Metcal

SMT / PCB Equipment Auctions

Online SMT Auction
Featuring Items From FryMaster

Date: TBD | Baja Bid

Electronic Equipment Mart

Vitronics XPM3 Lead Free

Reflow Ovens

X-Line Asset Management

Juki KD-2077

Adhesive Dispensing Equipment

LEL Semi

DEK Horizon 03iX

Screen Printing Equipment

JMW Enterprises, Inc.

Universal Instruments 6380H

Through Hole Equipment

KD Electronics Ltd.

Mirtec MV-7U AOI

Inspection Equipment

IBE SMT Equipment

Universal Instruments Genesis GC-60D SMT Pick & Place

Pick and Place Equipment/Feeders

Capital Equipment Exchange

Events Calendar

IPC E-Textiles 2018 Conference | September 13 | IPC

Fan Out Packaging- Technology Overview and Evolution - SMTA Webtorial | July 17, 18 | SMTA

PCB Cleaning Webinar Series | ZESTRON Corporation

Training Courses

IPC Training & Certification Courses

Soldering & PCB Rework Courses

Career Center

SMT Field Service / Technical Support

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Duluth, GA | Seika Machinery

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Albany, NY | YINCAE Advanced Materials

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Everywhere | SMTnet

Industry Associations Events

SMTA

SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies.

Membership Info | SMTA Certification | Bookstore | Upcoming Events

IPC

IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

Membership Info | Training & Certification | Online Store | Upcoming Events

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard

SMTnet.com, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

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Used PCB Assembly Equipment - CE Exchange

Rework Made Easy - Guided processes with computer aided alignment and 3900W of power - Ersa HR 550 Rework Station

Speedprint SP700avi inline SMT screen printer

Software for PCB Manufacturing - Unisoft

ONLINE AUCTION - SMT Equipment

Experience the Blackfox Difference - Premier IPC Training & Certification Center

Hioki 1240 Flying Probe Tester - ultra-high speed measuring, fine pitch inspection.

Innovative aqueous and solvent based technologies for cleaning PCBs

Custom SMT Nozzles and Tools - Count on Tools

MIRTEC MV 6 OMNI High-Speed / High-Performance 3D AOI MACHINE.

NEW PDR Products for IR Thermal Test and Rework

Ecolloy - New Low Dross, Low Voids Solder Materials from Qualitek

Soldertools.net - Rework Tools

Vacuum Tweezers - pick up small components with ease

HELLER - Choose an Oven for Your Reflow Needs

KIC - Making Reflow Ovens Smarter

Inspection challenges? Comet Lab One - RF Power - X-ray & CT - ebeam under one roof

Turn-Key PCB Prototypes - On Your Bench in 5 Days

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Eliminate premature failure from corrosion

Reflow Oven